Moon Su-ah is a South Korean rapper and singer managed by MYSTIC Story. She is a member of the girl group Billlie. She is best known for being a former YG Entertainment trainee and a contestant on the competition show Unpretty Rapstar 2.
Known For: Acting
Birthday: 1999-09-09
Place of Birth: Cheongju, South Korea
Also Known As: Moon Su Ah, Moon Su-ah, 문수아, Billlie